Fix the AV1 RTP depacketizer for instances where the OBU elements
did not have their OBU size fields removed according to the
recommendation (SHOULD) of the AV1 RTP specification.
Roger Hardiman courteously reported that the depacketizer doesn't
work correctly for fragmented OBU elements with their OBU size
fields still present and will incorrectly state that the
continuation of such a fragment was unexpected, because the
frag_obu_size field was used as a state and only incremented
when the size field needed to be updated on OBU size field
restoration. This patch solves the slip.
Change-Id: I95af8cc89862e8ecf79aabcf029dd95a20dfd7ad
Fixed warning about OBU count being wrong, which can only be
determined when the number of OBUs in the header is non-zero,
not the other way round.
Signed-off-by: Chris Hodges <chris.hodges@axis.com>
Add RTP packetizer and depacketizer according to (most)
of the official AV1 RTP specification. This enables
streaming via RTSP between ffmpeg and ffmpeg and has
also been tested to work with AV1 RTSP streams via
GStreamer.
It also adds the required SDP attributes for AV1.
AV1 RTP encoding is marked as experimental due to
draft specification status, debug amount reduced
and other changes suggested by Tristan.
Added optional code for searching the sequence
header to determine the first packet for broken
AV1 encoders / parsers.
Stops depacketizing on corruption until next keyframe,
no longer prematurely issues packet on decoding if
temporal unit was not complete yet.
Change-Id: I90f5c5b9d577908a0d713606706b5654fde5f910
Signed-off-by: Chris Hodges <chrishod@axis.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
